Why a maintenance plan doesn't get followed

Almost every company has a planned maintenance schedule. Far fewer actually follow it, and the usual diagnosis — “not enough time” — is true but useless, because it doesn’t say what to fix.

Here are the six real reasons, with the tell-tale sign for each one.

1. The plan doesn’t push back

The sign: inspections are skipped and nobody notices until there’s a breakdown.

A task that only lives on a calendar doesn’t protest when it isn’t done: it rolls over to next month, and from there to next year. Silently.

What to fix: have preventive maintenance generate real work orders with an owner and a date, not reminders. What has no owner doesn’t get done.

2. The plan is oversized

The sign: the percentage of the plan completed has been well below target for months, and it drops during high season.

This is the most common one and the worst diagnosed, because it gets interpreted as a lack of discipline when it’s actually an arithmetic problem: the plan demands more hours than exist.

What to fix: cut scope, don’t push harder. Start by lowering the frequency on over-maintained equipment — the units that have gone several cycles without a single anomaly — and free up those hours for what actually fails.

3. Planning against an ideal calendar

The sign: orders generated on a holiday, or under the name of someone on vacation, born already unmet.

What to fix: have the system check holidays and availability before generating an order, using the shifts, schedules, and vacations from staff management. And plan below capacity, leaving explicit room for corrective work based on the historical ratio.

4. Rescheduling costs more than ignoring the plan

The sign: the plan says one thing and the week went another way, and nobody updated it.

It’s a hard rule: if moving a job means opening a form and filling in fields, people write it down in a notebook instead, and the system ends up describing a week that never happened.

What to fix: make moving work as simple as dragging it on the calendar, and provide the option to leave an order postponed with a reason instead of closing it falsely.

5. What wasn’t done gets closed anyway

The sign: the plan shows 100% completion and corrective work doesn’t drop. Nobody understands why.

It’s the easy temptation when completion is measured as a target: closing orders that were never carried out. And it ruins the data irreversibly.

What to fix: two things. Have the app require a completed checklist to close a preventive task — it already does — and stop measuring the team by completion percentage, because that’s the fastest way to make it stop being real.

6. What gets found goes nowhere

The sign: corrective work doesn’t drop even though inspections are being done.

During an inspection, things get noticed: a worn belt, a small leak, a reading that keeps getting worse. If that gets written down as a comment, it gets lost — nobody rereads comments on closed orders — and the failure arrives three months later.

What to fix: give checklist fields a minimum and maximum value, so an out-of-range reading is logged as an anomaly. And turn that anomaly into an incident with an owner and a date, or into an explicit decision to do nothing.

If it’s logged and nothing happens, the technician stops logging it after the third time.

7. The plan was written once and never revisited

The sign: the frequencies are the same as five years ago, even though the equipment, usage, and staff have changed.

It’s the quietest reason because it produces no immediate symptom. The plan gets completed, inspections happen, and yet some equipment is checked too often and other equipment not often enough.

What to fix: a one-hour quarterly review, with the KPIs in front of you, that produces concrete decisions: which frequencies to raise, which to lower, and which assets have accumulated a cost that no longer justifies repairing them.

And when wear depends on usage, change the trigger: the asset can carry a counter with a limit and a warning percentage, so the order is generated once the threshold is exceeded instead of by calendar.

Giving it a fixed slot on the calendar, like any other task, is a dumb trick that works: it’s the first thing to disappear once the day fills up with urgencies.

The diagnosis, in half an hour

With reports in front of you:

If plan completion is low → reason 2 or 3. If it’s high and corrective work isn’t dropping → reason 5 or 6. If there are many overdue orders left open → reason 1 or 4. If anomalies are close to zero → reason 6, or the checks are looking in the wrong place.

The KPI to watch, and how not to use it

The percentage of plan completed is the one that diagnoses almost all of the reasons above. But it has a well-known trap: as soon as it becomes a team target, it stops measuring what it claims to measure.

If someone is evaluated on hitting the plan, the shortest path isn’t executing it better: it’s closing orders that were never done, or padding the plan with easy tasks that inflate the percentage. The metric goes up and corrective work stays the same.

That’s why it’s worth always looking at it alongside one that can’t be dressed up: the ratio of preventive to corrective hours. If plan completion rises and that ratio doesn’t move for several months, the compliance is nominal.

And it’s worth using it to size the plan, not to evaluate people. A plan completed at 70% is extremely valuable information — it says 30% of the plan is excess — and you only get that number if nobody has an incentive to misreport it.

What isn’t a reason

Having corrective work at all. There will always be some, and for cheap or redundant equipment it’s the right strategy.

Rescheduling often. It’s normal and healthy, as long as it gets recorded.

Some orders closing without a checklist. Not all of them need one.

Chasing these three as if they were failures is the fastest way to make the system feel like a burden.

Where to start fixing it

With reason 2, almost always: cut the plan down until it’s executable. A plan completed at 80% on what matters is worth far more than one completed at 40% on everything.

There’s more on how to build one in how to set up a preventive maintenance plan. If you’d like to review yours, you can request a demo.